| Atlantic Center for Independent Living | Empowers people with disabilities to make their own life choices and to realize their greatest potential as individuals. |
| Atlantic County Office on Aging | Serving Atlantic County senior citizens through services and resources. |
| Atlantis Community, Inc. | Advocates for all people with disabilities to be a meaningful part of an integrated community of their choice. |
| ATTIC, Inc. | Serves people of all ages with disability and recognize their right to maintain personal control over their lives and make their own choices. |
| Austin Resource Center for Independent Living – Round Rock | ARCIL is a private non-profit corporation dedicated to the advancement and full participation of persons with disabilities in all aspects of life. |
| Austin Resource Center for Independent Living – San Marcos | ARCIL is a private non-profit corporation dedicated to the advancement and full participation of persons with disabilities in all aspects of life. |
| Austin Resource Center for Independent Living (ARCIL) | ARCIL is a private non-profit corporation dedicated to the advancement and full participation of persons with disabilities in all aspects of life. |
| Autauga Rural Transportation | |
| Autism Services, Education, Resources and Training | ASERT maintains a statewide resource center for anyone to call or email with questions about autism (including available services and supports). ASERT also provides education on topics related to autism, develops resources, measures and collects data related to autism across the state, and supports the autism community throughout PA. |
| Autism Society of North Carolina | Improves the lives of individuals with autism, supports their families, and educates communities. |